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STMicroelectronics STM32L073VZT6D
- Part No.:
- STM32L073VZT6D
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L073VZT6D.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:9,514
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Product details
Overview
STM32L073VZT6D from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP100 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 (crystal-less), 12-bit ADC (1.14 Msps, 16 channels), and dual 12-bit DACs with output buffers - deployed in battery-powered industrial sensors and portable medical devices requiring sub-100 µA/MHz active power and RTC-backed standby.
For engineers reviewing the STM32L073VZT6D datasheet, STM32L073VZT6D pinout, STM32L073VZT6D application, or STM32L073VZT6D equivalent, key selection criteria include verified low-power mode current (0.29 µA Standby, 0.86 µA Stop + RTC + RAM retention), LCD driver support (4×52/8×48 segments), and USB crystal-less operation with battery charging detection - all confirmed in DS10685 Rev 7.
Technical Context
The STM32L073VZT6D integrates an Arm Cortex-M0+ core with MPU, operating from 32 kHz to 32 MHz, delivering 0.95 DMIPS/MHz. Its clock system includes factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, 32 kHz LSE for RTC, and PLL for CPU scaling - enabling precise timing across ultra-low-power modes.
Analog subsystem comprises two ultra-low-power comparators (1.65 V min supply), 12-bit ADC with 16-channel multiplexing and 1.14 Msps sampling, and two buffered 12-bit DACs (1.8 V min). The device supports up to 24 capacitive sensing channels and embeds a true RNG plus firewall protection for secure firmware execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control in energy-constrained systems. |
| Memory | 192 KB Flash (ECC, read-while-write), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware updates and data logging without external memory. |
| Power Consumption | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop + RTC + 20 KB RAM retention - extends battery life to multi-year operation in coin-cell applications. |
| ADC | 12-bit, 1.14 Msps, 16-channel, operational down to 1.65 V - allows high-resolution sensor acquisition even during brownout conditions. |
| DAC | 2 × 12-bit buffered outputs, functional down to 1.8 V - enables precision analog waveform generation for calibration and actuator control. |
| USB Interface | USB 2.0 crystal-less with battery charging detection and LPM - eliminates external crystal and simplifies BOM for portable USB-peripheral designs. |
| Temperature Range | -40 °C to +125 °C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O power supplies | Independent domains allow noise isolation between analog peripherals and digital I/O; VDDA must be ≥ VDD for ADC/DAC accuracy. |
| VSS, VSSA, VSSIO2 | Ground returns | Separate analog/digital grounds reduce coupling noise; mandatory star-point connection at PCB level for <12-bit precision. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7, PH0–PH1 | General-purpose I/Os | 78 of 84 pins are 5V-tolerant; configurable as GPIO, ADC input, DAC output, or timer channel - enables direct interfacing with legacy 5V logic. |
| PA11/PA12 | USB D+/D− | Dedicated crystal-less USB transceiver pins; internal termination and voltage regulation eliminate external components for full-speed USB. |
| PC13–PC15 | RTC oscillator inputs | Support 32.768 kHz crystal; PC14/PC15 require external load capacitors (12.5 pF typical) for ±20 ppm RTC accuracy over temperature. |
| NRST | Active-low reset input | Accepts 1.65–3.6 V logic; internal pull-up ensures reliable reset assertion during power ramp; compatible with open-drain supervisors. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC + RAM retention | 0.86 µA - enables time-stamped sensor wakeups while preserving full context across years on CR2032. |
| Crystal-less USB 2.0 | Internal 48 MHz HSI48 auto-calibrated against USB SOF - removes crystal, load caps, and routing constraints, reducing BOM cost by $0.15–$0.25. |
| Embedded LCD controller | Drives up to 4×52 or 8×48 segments with on-board step-up converter - eliminates external LCD bias IC in portable instrumentation displays. |
| Capacitive touch sensing (TSC) | 24-channel hardware-accelerated touchkey/rotary support - enables battery-operated HMI with <5 µA average current in touch-scan mode. |
| True random number generator (RNG) | FIPS 140-2 compliant entropy source - provides cryptographically secure keys for TLS handshake and firmware signing without external TRNG IC. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pulse logging, RF transmission, and tamper detection. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LoRaWAN stack execution, and RTC-based scheduled wakeups. Use Value: 0.29 µA Standby current and 5 µs Flash wakeup enable >10-year battery life; integrated EEPROM stores calibration and usage history without wear leveling overhead. | Use Scenario: Handheld single-lead ECG device with real-time waveform display, Bluetooth LE upload, and rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Signal acquisition controller running ADC at 1 ksps, buffering data in SRAM, driving segment LCD, and managing USB charging detection. Use Value: Dual 12-bit DACs generate precise reference voltages for analog front-end offset correction; crystal-less USB reduces PCB area by 3 mm² vs. crystal-based alternatives. |
| Industrial Temperature Sensor Node | Wireless Valve Actuator Controller |
Use Scenario: DIN-rail mounted node measuring ambient and process temperature via thermistor/RTD, transmitting data via RS-485 Modbus. IC Role / Device Role / Timing Role: Precision analog interface handling 4-wire RTD excitation, cold-junction compensation, and linearization in firmware. Use Value: 12-bit ADC with 16-channel mux and built-in VREFINT enables ratiometric measurements without external reference; -40 °C to +125 °C rating ensures operation inside enclosures near motors. | Use Scenario: Battery-powered smart valve with position feedback, PWM motor drive, and BLE commissioning interface. IC Role / Device Role / Timing Role: Real-time actuator manager executing PID loop at 100 Hz, reading potentiometer ADC, and driving H-bridge gate drivers via TIM2/TIM21. Use Value: 7-channel DMA offloads ADC-to-PWM synchronization; ultra-low-power comparators detect end-stop switches at <1 µA quiescent current, extending valve runtime per charge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L072VZT6 | No USB interface; 128 KB Flash, same 20 KB SRAM and 6 KB EEPROM | Suitable where wired communication uses USART/I2C only; excludes USB-CDC or DFU use cases | Select when USB is unnecessary and cost reduction is prioritized over peripheral flexibility. |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, no EEPROM, higher active current (80 µA/MHz), no crystal-less USB | Better for DSP-intensive tasks (e.g., FFT-based vibration analysis); requires external USB crystal and lacks EEPROM for parameter storage | Choose when floating-point math or higher clock throughput justifies 2.5× higher active power and added BOM complexity. |
Compared with STM32L072VZT6, the STM32L073VZT6D adds crystal-less USB and 64 KB more Flash - critical for field-upgradable firmware and USB HID interfaces. Against STM32L432KCU6, it trades FPU capability for 3× lower standby current and integrated EEPROM - making it superior for long-life, low-duty-cycle sensing nodes.
Availability
STM32L073VZT6D is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial temperature sensors, and wireless valve actuators requiring stable component supply across 10+ year product lifecycles.
Supply support for STM32L073VZT6D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, wide temperature operation, and integrated analog peripherals - optimized for energy harvesting, wearable health, and smart infrastructure endpoints.
FAQ
What is the maximum operating frequency and corresponding power supply range for STM32L073VZT6D?
The STM32L073VZT6D operates up to 32 MHz across its full 1.65 V to 3.6 V supply range, with dynamic voltage scaling maintaining core performance without external regulators. At 32 MHz and 3.3 V, typical active current is 93 µA/MHz; operation below 1.65 V is not supported and may cause undefined behavior or flash corruption.
Does STM32L073VZT6D support hardware encryption or secure boot features?
The STM32L073VZT6D includes a true random number generator (RNG) and memory firewall protection to prevent unauthorized code execution or data access, but lacks dedicated AES/SHA accelerators or ROM-based secure boot. Secure firmware updates require external cryptographic libraries or companion secure elements like STSAFE-A110 for PKI-based authentication.
Can the integrated LCD controller drive graphic LCDs or only segment-based displays?
The LCD controller supports only static and multiplexed segment-type displays (up to 4×52 or 8×48 segments), not pixel-addressable graphic LCDs. It provides contrast adjustment, blinking mode, and on-chip step-up conversion - ideal for instrument panels and utility meters but incompatible with SPI-driven TFT or OLED modules requiring frame buffer memory.
What are the validated external crystal requirements for the 32 kHz RTC oscillator?
The 32 kHz RTC oscillator requires a standard 32.768 kHz tuning-fork crystal with load capacitance of 12.5 pF (typical), series resistance ≤ 90 kΩ, and drive level ≤ 1 µW. ST recommends NX3225SA or ABM3B series crystals; mismatched load capacitance causes >±5 ppm timing drift, degrading timestamp accuracy beyond industrial grade.
STM32L073VZT6D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 84
- Program Memory Size:
- 192KB (192K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 6K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L073VZT6D FAQ
1.How can I place an order for STM32L073VZT6D through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L073VZT6D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32L073VZT6D reliable?
The price and inventory of STM32L073VZT6D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L073VZT6D is usually 5 days.
3.What payment methods are accepted for STM32L073VZT6D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L073VZT6D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L073VZT6D?
STM32L073VZT6D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L073VZT6D order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32L073VZT6D?
For technical support, including STM32L073VZT6D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L073VZT6D requirements.
6.How does Aetrix verify that STM32L073VZT6D is sourced from the original manufacturer or authorized distributors?
All STM32L073VZT6D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32L073VZT6D meets industry standards.
7.What is the process for return or replacement of STM32L073VZT6D?
All STM32L073VZT6D units undergo pre-shipment inspection (PSI). If there is an issue with STM32L073VZT6D, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32L073VZT6D part is unused and in its original packaging.
Return procedure for STM32L073VZT6D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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